bridge: fdb: support match on source VNI in flush command

Extend "fdb flush" command to match fdb entries with a specific source VNI.

Example:
$ bridge fdb flush dev vx10 src_vni 1000
This will flush all fdb entries pointing to vx10 with source VNI 1000.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David Ahern <dsahern@kernel.org>

diff --git a/bridge/fdb.c b/bridge/fdb.c
index e01e14f18d26ab51ae5bee1f9cbabe810ecdd1dd..12d19f080289cb555aeeec93ad58252d897c9ce9 100644 (file)
--- a/bridge/fdb.c
+++ b/bridge/fdb.c
@@ -45,7 +45,7 @@ static void usage(void)
                "              [ state STATE ] [ dynamic ] ]\n"
                "       bridge fdb get [ to ] LLADDR [ br BRDEV ] { brport | dev } DEV\n"
                "              [ vlan VID ] [ vni VNI ] [ self ] [ master ] [ dynamic ]\n"
-               "       bridge fdb flush dev DEV [ brport DEV ] [ vlan VID ]\n"
+               "       bridge fdb flush dev DEV [ brport DEV ] [ vlan VID ] [ src_vni VNI ]\n"
                "              [ self ] [ master ] [ [no]permanent | [no]static | [no]dynamic ]\n"
                "              [ [no]added_by_user ] [ [no]extern_learn ] [ [no]sticky ]\n"
                "              [ [no]offloaded ]\n");
@@ -700,6 +700,8 @@ static int fdb_flush(int argc, char **argv)
        char *d = NULL, *brport = NULL;
        unsigned short ndm_flags = 0;
        unsigned short ndm_state = 0;
+       unsigned long src_vni = ~0;
+       char *endptr;
 
        while (argc > 0) {
                if (strcmp(*argv, "dev") == 0) {
@@ -761,6 +763,12 @@ static int fdb_flush(int argc, char **argv)
                                duparg2("vlan", *argv);
                        NEXT_ARG();
                        vid = atoi(*argv);
+               } else if (strcmp(*argv, "src_vni") == 0) {
+                       NEXT_ARG();
+                       src_vni = strtoul(*argv, &endptr, 0);
+                       if ((endptr && *endptr) ||
+                           (src_vni >> 24) || src_vni == ULONG_MAX)
+                               invarg("invalid src VNI\n", *argv);
                } else if (strcmp(*argv, "help") == 0) {
                        NEXT_ARG();
                } else {
@@ -807,6 +815,8 @@ static int fdb_flush(int argc, char **argv)
                addattr32(&req.n, sizeof(req), NDA_IFINDEX, brport_ifidx);
        if (vid > -1)
                addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
+       if (src_vni != ~0)
+               addattr32(&req.n, sizeof(req), NDA_SRC_VNI, src_vni);
        if (ndm_flags_mask)
                addattr8(&req.n, sizeof(req), NDA_NDM_FLAGS_MASK,
                         ndm_flags_mask);

diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index c52c9331e2c25dac50c35eb8ec1d8598951f0f68..b1e96327cf23165787685695a05c6bf181bf7e00 100644 (file)
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -128,6 +128,8 @@ bridge \- show / manipulate bridge addresses and devices
 .IR DEV " ] [ "
 .B vlan
 .IR VID " ] [ "
+.B src_vni
+.IR VNI " ] [ "
 .BR self " ] [ " master " ] [ "
 .BR [no]permanent " | " [no]static " | " [no]dynamic " ] [ "
 .BR [no]added_by_user " ] [ " [no]extern_learn " ] [ "
@@ -892,6 +894,12 @@ specified by this option will override the one specified by dev above.
 the target VLAN ID for the operation. Match forwarding table entries only with the
 specified VLAN ID.
 
+.TP
+.BI src_vni " VNI"
+the src VNI Network Identifier (or VXLAN Segment ID) for the operation. Match
+forwarding table entries only with the specified VNI. Valid if the referenced
+device is a VXLAN type device.
+
 .TP
 .B self
 the operation is fulfilled directly by the driver for the specified network